Thruster style carbide tip penetrates on contact and plows through rebar</br>Thruster style re-inforced ground flute for efficient dust removal</br>Dynamic chisel shaped head keeps bit in contact with material at all times</br></br>Product Description</br></br>Makita carbide-tipped SDS-Plus bits are for drilling hardened materials. This D-00876 bit comes in a bulk pack of 25. It will drill as far as 4" deep. With this bit?? it is compatible with all hammers taking SDS-Plus type shank. The tip of the bit has a style called "hruster" which helps the bit to stay put on the material and drill through. It has a reinforced ground flute for efficient dust removal. The diameter of the bit is 1/4-inch.</br><br/>http://www.amazon.com/gp/product/B001MXBTTUo